1. problem of water scarcity
Can mankind solve the
problem of water scarcity
on its own?

4. ‘At some point or another it is likely that where you are sitting right now was covered in water. It may have been under the vast oceans that once spread further than they do today, or they may have been buried under as much as a mile of glacier. Glaciers formed the largest lakes; the Great Lakes, and they are responsible for carving mountains into the shapes we know.’

5. ‘People kill each other over
diamonds; countries go to war over oil. but the world’s most expensive commodities are nothing in the absence of water. fresh water is essential for life, with no substitute. Although mostly un-priced, it is the most valuable stuff in the world.’